Organic Chemistry
Organic Chemistry
8th Edition
ISBN: 9781305580350
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher: Cengage Learning
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Chapter 14, Problem 14.13P
Interpretation Introduction

Interpretation:

The relative importance of the contributing in each set of resonance-stabilized cation has to be estimated as in the section 14.3.

Concept Introduction:

Basic principle of mass spectrum: It generates multiple ions from the sample under investigation, it than separates them according to their specific mass to charge ration (m/z) and records the relative abundance (RA) of each ion types.

      MelectronbeamM+.+e-[Molecule]Molecular ionelectron[Radicalcation]

Interpreting a mass spectrum:

  1. 1. The each m/z values is the m/z value of one the fragments to the nearest whole number.
  2. 2. The peak with the highest m/z value in the molecular ions (M+), the fragment that results when the molecules lose electrons as result of being bombarding by the electron beam.
  3. 3. The m/z value of the molecular ion gives the molecular mass of the compound.
  4. 4. Peaks with smaller m/z values, fragment ion peak represent positively charged fragments of the molecular ion.

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Chapter 14 Solutions

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